MMP9 and idiopathic pulmonary fibrosis: Moreover, and as in the case of IPF LFs, mouse primary LFs isolated post-BLM administration presented with increased Tks5, Col1a1 and Mmp9 expression (Supplementary Fig. 7l–n respectively), exhibiting prominent podosome rosettes in the absence of any stimulation (Supplementary Fig. 7o–p).